Add the shredded chicken, white beans, corn, chicken broth, cumin, chili powder, salt, and pepper. Stir to combine.
Bring the mixture to a gentle simmer. If cooking on the stovetop, allow it to cook for 20 minutes. For a slow cooker, set it on low for about 4 hours; in an Instant Pot, seal the lid and cook on high pressure for 15 minutes.
Once cooked, stir in the Greek yogurt or sour cream until the chili reaches a creamy consistency.
Serve hot, garnished with your choice of toppings.
Notes
Store leftovers in an airtight container in the fridge for up to 3-4 days or freeze for up to three months.